Means for excluding flies from buildings.



c. 13.. GILLESPIE. MEANS FOR EXCLUDING FLIES FROM BUILDINGS. APPLICATION FILED MAY 25, 1911.

1,005,534, Patented 061;. 10,1911.

a SHBETSSHEET 1.

I J INVENTOR Mme. fl an/11 G. B. GILLESPIE. MEANS FOR EXCLUDING FLIES FROM BUILDINGS. APPLICATION FILED MAY 25, 1911.

WITNESSES v I [/VVEYVTOI Allorrizy 1 Patented Oct. 10, 1911.

3BEEETS-SHEET 2.

WITNESS s V I INVENTOR I 0.. B. GILLESPIEQ MEANS FOR EXCLUDING FLIES FROM BUILDINGS.

APPLICATION FILED MAY 25, 1911,

1,005,534. Patented Oct. 10,1911.

3 SHEETSSHEET 3.

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A Home CHARLES E. GILLESPIE, OF GRAND FORKS, NORTH DAKOTA.

MEANS FOR EXCLUDING. FLIES FROM BUILDINGS.

Specification of Letters Patent.

Patented Oct. 10, 191.1.

Application filed May 25, 1911.- Serial No. 629,364.

i To all whom it may concern:

Be it lmown that 1, CHARLES E. GlLLESPIT-J.

;a citizen of the United States of America,

. rants, meat markets or packing houses,

slaughter houses, and the like; and especially to their exclusion from entrance door ways which are the most diflicult to effectively guard.

The present invention consists in certain novel combinations of parts and in a flyproof entrance booth embodying the principal combinations as hereinafter described and claimed.

- The leading objects of the invention are .to prevent flies from entering a building or a portion thereof, as a sales room or workroom; and at the same time to allow free entrance thereto for persons and beasts.

Other objects will be set forth in the general description which follows.

Three sheets of drawings accompany this specification as parts thereof.

Figure 1 is a sectional plan view of a store made fiy-proofaccording to the present invention; Fig. 2 represents a vertical section through one of the entrance booths shown in Fig. 1; Fig. 3 represents a horizontal section on the line A-B, Fig. 2; Figs. 4 and 5 are fragmentary horizontal sections illustrating the operation of the doors of the entrance booth; Fig. 6 is a fragmentary perspective view, supplemental of Figs. 4 and 5 Fig. 7 is a fragmentary-sectional view showing a modification.

Like reference characters refer to like parts in all the figures.

In excluding flies from a building or apartment according to this invention, it is preferably provided with fly-proof front and rear entrances, a, and b, Fig. 1, and one or more separate fly-proof exits, c, and, in the case of a retail store, as represented by Fig. l, a sufiicient number of fly-proof wickets, d, for the delivery of goods, and cash slots, 6, through which to pass money, are provided; the two latter being arranged in convenient juxtaposition to sales counters,

and communicating with a vestibule, 9, through fly-proof side walls, 72., of glass and wire netting, either or both. The windows, and j, may be rendered fly-proof in any known or improved way. falls of brick or other building material completing the inclosure are represented in Fig. 1 at 74. One of the entrances a and b, to which the present invention more particularly relates, is shown on a larger scale and in detail by Figs. 2 to 6, inclusive, Sheets 2 and 3, which see. This entrance is composed of a pair of doors, 1 and. 2, arranged face to face, and opening toward each other with a sutficient space between them determined by side walls, 3 and 4; a top 5, and a floor 6; the latter wholly or in part of metallic grating; the whole constituting a booth of any required size. It will here be described as an'entrance for persons to a store or the like. Each of the doors 1 and 2 is hinged, either as represented at 7, or as represented at 8,-as may be preferred; central pivots, 7, being considered best for wide doors and in connection with the pneumatic device hereinafter described; and each door is rendered self-closing, as by suitable springs, 8, F ig. 2, combined with the hinges, in known or improved ways. The respective doors 1 and 2 are further provided with knob latches or like fastenings, 9 and 9; and pro vision made whereby only one door can be open at one time as follows: The bolts of the respective tastcnings are each provided witha hole, 10 or 10, Fig. 6, and the side wall 4 is provided, in addition to its stops l1 and 11 by which the latch edges of the respective doors are compelled to more in;

' ward when the doors are opened, with a pair of rods,12 and 12', each constructed with one end, 18 or,13 adapted to interlock with the corresponding hole 10 or 10, and each surrounded by a coiled spring, 14, under compression, between an abutment, 15, and a shoulder on the rod, whereby said holeengaging end 13 or 13 is kept normally interlocked with said hole 10 or 10 so as to The prevent the retraction of the bolt. other end of each rod is L-shaped shown at M or 14", and when either door contacts with the projection of one of these L-sh aped ends, the corresponding rod 12 or 12 is retracted endwise against the pressure of its spring, and the opposite door is unlocked so that it may be unfastened and opened. Compare Figs. 4 and 5, in which respec tively each of the doors 1 and 2 is shown open and closed.

' Within the top 5 of the booth a rotary fan, 15, Fig. 2, is suitably supported, with a fly screen, 16, above it, and, if desired, with a subjacent coarse screen, 17, or its equivalent, to prevent accident; the upper end of the fan spindle carrying driving means in the form of a pulley, 18, or other motor connection. This fan operates to draw air through the fly screen 16 and to force the same downward into the booth. Beneath the grating floor 6 of the booth another rotary fan, 15, Figs. 2 and 3, is preferably and conveniently arranged; the same being suitably supported, and'having its spindle extending downward and provided with driving means, 18, Fig. 2. This fan is so driven as to suck downward the air from within the booth, and therewith any flies that may have entered with or on an entering person. It is inclosed by a discharge pipe, 19, leading downward and laterally in any convenient direction through the outer wall of the building, and provided internally with'light spring-closed flap valves, 20, which open readily under the pressure of the airwhen the fans are in operation, and close automatically against the admission of flies and dust when the fans are stopped.

It will be understood that when a person opens the outer door 1, the inner door 2 being closed, as illustrated by Fi 4, the door 1 closes behind the person and or a moment the person is within the booth between the two closed doors while, by means of the current or air maintained by the fans 15 and 15', any flies that may have entered with or upon the. person are expelled through the grating noor 6 and discharge pipe 19. The door 2 may then, immediately, be freely opened, and the person passes into the flyproof building or apartment with which the entrance communicates; the door 2 closing behind the person, and unlocking the door 1 preliminary to the next admission.

Referring again to Fig. 1,. the entrance booth may project inside as shown at a or 'outside as shown at 7), and may be made large enough to admit several persons at one time, or as applied to a slaughter house maybe adapted to admit beasts thereto, thus abating the great nuisance of having flies in the killing room.

The rear entrance, 7), may be throughout,

of the construction above described, or the pneumatic device (Figs. 2 and 3) may be confined to the front entrance; the bottom and top of the booth being made fly-proof in any known or improved way. And the rear entrance ma serve both for entrance and exit, as when both the doors 1 and 2 are closed, either of them may be opened first. Compare Figs. 4 and 5. The front entrance a may in like manner be used as an exit, but separate fly-proof front exits, 0, are preferably combined therewith as aforesaid so as to aiiord quick egress under all circumstances.

The exits 0 are each of the following con struction. (See Fig. 1.) Three or preferably four doors, 21, revolve around a vertical axis on suitable pivots, and their outer edges are fitted to a'segmental fly-proof wall, 22, adjoining the exit passageway and adapted to close the space between two successive doors. Diametrically opposite said wall, a segmental guard, 2 of like extent is erected. As this need not be fly-proof, it may be a railing or grille; its funelionbeing, in combination with said wall limit a space, 24-, through which persons must pass into the successive spaces between the doors 21. W'ithin each of these spaces there is a secondary door, 25, having spring hinges at its inner edge and noru'ially held by its springs against the back of the adjoining door as shown at the left in F 1. A spring bolt, 26, at the free edge of each of said secondary doors is constructed to interact as a stop with a suitable striker on a post, 27, at the outer end or edge of said segmental guard 23. The two doors, 21 and 25, of each pair reach this point in contact, as shown at the left in Fig. 1; then, as the doors 21 continue their revolution, the sec ondary door 25 is caught and hold, while the main door 21 moves away therefrom, as at the right in Fig. 1, until, another pair of the doors approaching the post 27, as at the right, have nearly reached it, when a projoction, 28, on the face of the approaching door then fastened at the post, and permits this secondary door to spring into its normal position in contact with its companion main door. By comparing the exits c at the right and left in Fig. 1, it will be seen that the inter door spaces are always open to accom modate persons between the doors on the exit side, and the guard 23 keeps persons from going between the doors at a point where they might be struck by the secondary doors.

The wickets cl are constructed on the same principle as the exits 0; except that their doors oscillate instead of revolving. The details of both are made thesubject-matter of a companion specification, forming part of my patent application Serial No. 629,365 filed May 25, 1911; and further description thereof in the present specification is therefore omitted. For the purposes of this in vention the exits and wickets may be of known or llTlPlOWBd construction, together with the accessories of the cash-slots c.

The modification illustrated by- Fig. 7 consists in constructing the entrance booth with outlet passages, 29, for files, in its'side walls.

The object is to. floor 6; and the walls may be readily provided with such passages, opening into the dispense with the grating tally interior of the booth at different heights, as shown, by constructing the walls of sheet metal with vertical spacing strips, 30, between successive sheets; the passages to coinmunicate as a whole, at bottom, with the chamber of a suction fan 15 or its equivalent.

It will be obvious that one of the fans 15 and 15 may be omitted it the other with its motor be made of sufiicient power; the locking device member with which each latch is provided, and shown at 10 or 10 in the form of a hole, may be male instead of female, the interacting end of the locking rod being correspondingly modified; and other like modifications will suggest themselves to those skilled in the art.

Having thus described said improvement, I claim as my invention, and desire to patent under this specification:

1. A fly-proof passageway forming booth having, in combination, a pair of horizonswinging doors, openable toward each other, aside wall provided with stops so limiting the opening movement or" each door, and locking and unlocking devices supported by this wall and constructed and arranged for operation by the respective doors in the act of closing them, whereby one door is made to unlock the other, and both doors are unlocked so that either door may be freely opened when both are closed; the passageway being at all times obstructed by one or both doors.

2. A fly-proof passageway forming. booth having, in combination, a pair of horizontally swinging doors, openable toward each other and provided with latches, a side wall provided with stops so limiting the door opening movement of each, and latch looking and unlocking devices supported by this wall in juxtaposition to the respective latches and constructed and arranged for operation by the respective doors in the act of closing them, whereby one door is made to unlock the other, and both doors are un- .locked so that either door may be freely opened when both are closed; the passageway being at all times obstructed by one or both doors;

A fly-proof passageway forming booth having, in combination, a pair of horizontall y swinging doors, openable toward each other and provided with latches each constructed with one member of a locking device, a side wall provided with stops so limiting the opening movement of each door, a pair of horizontal locking and unlocking rods supported by this wall and each having at one end the other member of said locking device for one door and at its other end'a projection constructed and arranged to interact with the other door, and springs adapted to move eachrod endwise into its locking position; whereby each door is l l l l l locked whenever the other is opened, and the passageway is at all times obstructed by one or both doors.

4. A fly-proof passageway forming booth having, in combination, a pair of horizontally swinging doors, openable toward. each other and provided with latches and with spring hinges whereby they are rendered self-closing, side wall provided with stops so limiting the opening movement ot cach door, and mechanical latch locking and un locking devices supported by this wall in juxtaposition to the respectivelatches and constructed and arranged for (nieration by the respective doors them; whereby one door is made to unlock the other, and both doors are unlocked so that either door may be freely opened when both are closed; the passageway being at all times obstructed by one or both doors.

5. Means for excluding flies from a build ing having, in combination, a fly-proof passageway forming booth constructed with a pair of horizontally swinging doors openable toward each other, side walls determing ing'the space between said doors, a top and. a floor, and provided with passages through which flies may be expelled from the closed booth, mechanical devices for so limiting the opening movementof each door and for preventing the opening of either door until after both are closed, andpneumatic devices for expelling through said passages any flies that may enter the booth with or upon a person or beast passing therethrough.

6. Means for excluding flies from a building having, in combination, a fly-proof passageway forming booth constructed with a pair of horizontally swinging doors openable toward each other, side walls determining the space between said doors, a top and a grating floor, mechanical devices for so limiting the opening movement of each door and for preventing the opening of either door until after both are closed, and pneumatic devices for expelling through said grating floor any flies that may enter the booth.

7. Means for excluding flies from a build ing having, in combination, a flyproof passageway forming booth constructed with a pair of horizontally swinging doors openable toward each other, side walls determin ing the space between. saiddoors, a screened air-admitting top and a door, mechanical devices for so limiting the opening movement of each door and for preventing the opening of either door until after both are closed, and pneumatic devices for drawing air through said top of the booth and expelling therewith any flies that may enter the booth.

8. Means for excluding dies from a buildinghaving, in combination, a tiy-proof pas sageway forming-booth constructed with a pair of horizontally swinging doors openable toward each other, side walls determining the space between said doors, a top and a grating floor, a discharge pipe leading from beneath said floor and in comn1unieation with its grating provided with self-closing valves adapted to be opened by air pressure, mechanical devices for so limiting the opening movement of each door and for preventing the opening of either door until after both are closed, and pneumatic devices for expelling through said grating and discharge pipe any flies that may enter the booth. 7

9. Means for excluding flies from a building having, in combination, with separate continuously operable quick-exits communieating with the same apartment, an entrance passageway forming booth constructed with i a pair of horizontally swinging doors openable toward each other, side walls determining the space between said doors, a top and a floor, and provided with passages through which flies maybe expelled from the closed booth, mechanical devices for so limiting the opening movement of each door and for preventing the opening of either door until after both are closed, and pneumatic devices for. expelling through said passages any flies that may enter the booth with or upon a person or beast passing therethrough, substantially as hereinbefore specified.

CHARLES B. GILLESPIE.

Witnesses P. MoLoUeHLIN, M. NORMAN. 

